Here you can find the source of sorted(Collection
public static List<String> sorted(Collection<String> ss)
//package com.java2s; /*/*from w w w.j a v a2 s .c om*/ * Copyright (C) 2015 Stefan Niederhauser (nidin@gmx.ch) * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.util.*; public class Main { public static List<String> sorted(Collection<String> ss) { final List<String> sorted = new ArrayList<>(ss); Collections.sort(sorted); return sorted; } }